What is an LED?_ An LED (Light Emitting Diode) is a type of semiconductor device that converts electrical energy into light. _How does it work?— When a voltage is applied to the LED, electrons recombine with holes, releasing energy in the form of photons, which we see as light. _Key Characteristics:_ ���_Color_: LEDs are available in a range of colors, including red, orange, yellow, green, blue, and white. ��_Brightness_: Measured in lumens (Im) or candelas ���_Voltage_: Typically operate betwee

What is an LED?_ An LED (Light Emitting Diode) is a type of semiconductor device that converts electrical energy into light. _How does it work?— When a voltage is applied to the LED, electrons recombine with holes, releasing energy in the form of photons, which we see as light. _Key Characteristics:_ ���_Color_: LEDs are available in a range of colors, including red, orange, yellow, green, blue, and white. ��_Brightness_: Measured in lumens (Im) or candelas ���_Voltage_: Typically operate betwee

How does an LED light change when dipped in liquid nitrogen? 💡 Museum Educator Adelaide plunges an LED into liquid nitrogen and watches its color shift from orange to yellow to green. Temperature affects the LED’s “band gap,” the amount of energy electrons need to jump across the material and create light. As the LED cools, the energy gap increases, and the light shifts to higher-energy colors. When it warms back up, it turns to orange again. #Chemistry #ScienceExperiment #Light #LiquidNitrogen